A sterile implantable artificial substitute for a knee joint typically designed to replace all the articulating surfaces of the damaged/degenerative (e.g., arthritic) joint [total knee arthroplasty (TKA)]; it is designed to be implanted with retention of the posterior cruciate ligament. It typically includes femoral, tibial, and patellar components that articulate and with parts made of metal, ceramic, and/or polyethylene (PE). The device may be implanted with or without bone cement and is typically used in cases where bone stock is good and supporting ligaments provide adequate stability.